Yann LeCun (@ylecun)

Trump just got exposed for running the biggest insider trading operation in American history. Nancy Pelosi traded $5 million in stocks and Congress lost its mind. Trump literally executed $750 MILLION worth of stock trades in ONE quarter while being President. His ethics filing just dropped and the numbers are genuinely unprecedented in history: Between January and March 2026, Donald Trump personally executed 3,700 individual stock transactions worth between $220 million and $750 million. That's roughly 60 trades PER DAY. While signing executive orders, meeting foreign leaders, and making policy decisions that directly impact the companies he's buying and selling. Now here's where it gets really insane: On February 10, Trump bought between $1 million and $5 million worth of Dell stock. Three months later, on May 8, he stood at a Mother's Day event at the White House, thanked Michael Dell by name, and told Americans to "go out and buy a Dell." Dell stock surged 14.6% that day to an all-time high of $263.99. Since Trump's February purchase, Dell is up 96%. And 5 months BEFORE Trump bought Dell stock, Michael and Susan Dell donated $6.25 billion to Trump Accounts, one of the largest philanthropic commitments to a sitting president's signature program in modern history. So the timeline goes: Dell donates $6.25 billion to Trump's program -> Trump buys Dell stock ->Trump tells America to buy Dell from the White House podium -> Stock hits all-time high And that's just ONE stock... The same filing shows Trump bought Nvidia stock on February 10. One week later, Nvidia announced a massive chip deal with Meta. He bought more Nvidia stock one week BEFORE his own Commerce Department approved the sale of Nvidia chips to Saudi Arabia. He bought Intel stock starting in March 2026. The US government already owned a 9.9% stake in Intel worth over $41 billion. On April 30, Trump posted on Truth Social praising Intel, writing that "Intel Stock continues to rise." Intel jumped 3% in after-hours and is now up 140% year-to-date. He bought Palantir stock while his administration was actively handing them billion-dollar government contracts for immigration enforcement and defense. He bought Robinhood stock while his own Trump Accounts program uses Robinhood as the broker. He's currently sitting on over 100% profit on AMD, Intel, Bloom Energy, Marvell Technology, and at least 10 other positions. Every single president since Lyndon B. Johnson has used a blind trust to avoid exactly this situation. But Trump didn't. His assets sit in a trust controlled by his own children, and the filings show a broker acted as agent on several trades. The White House says the portfolio is "independently managed." But here's what independently managed looks like: Buy Dell stock. Three months later, publicly endorse Dell from the White House. Stock hits all-time high. Buy Nvidia stock. One week later, your own government approves their chip sales. Stock rips. Buy Intel stock. Post about Intel on Truth Social. Stock jumps. The government you run already owns a 10% stake. Buy Palantir. Hand them contracts. Buy Robinhood. Route a federal program through their platform. Nancy Pelosi got absolutely destroyed for her husband's stock trades. Her husband's total disclosed trades in his most controversial year were worth roughly $5 million. Trump just disclosed up to $750 MILLION in a single quarter. While making the actual policy decisions that move these stocks. This isn't a left or right issue. We're talking about the President of the United States averaging 60 stock trades per day in companies his own administration regulates, contracts with, and publicly endorses. What do you think?

The power of Trump, Putin, and Netanyahu appears to be waning. "Plummeting approval ratings for these three poisonous comrades-in-arms show voters are demoralized and tiring of forever wars."

I don’t know why data centers have become this generations nuclear power. Unlike nuclear power, there is a 0% chance that a data center can lead to any sort of disaster scenario. This project in Utah is: - in an uninhabited area - bought and repurposed water already in use - is bringing its own power, so it won’t cost citizens anything It’s like being against building a nuclear power plant in the middle of Nevada, except there is no radioactive waste. No fall out. No risk of anything. It’s a big computer in the middle of nowhere, that is self sufficient in all resources. There are a million real problems in America. Data centers just aren’t one.

I just learned that the "data centers are using our water!" bullshit started because of a book called Empire of AI by Karen Hao in which she totally fucks up the math when determining how much water they use, an error she later acknowledged

Appreciate it when the AI doomer crowd occasionally lets the mask slip a little (Allen is a co-founder of the anti-AI group Humans First and frequent guest on conservative podcasts pushing, uh, Unabomber messaging)

Trump disparages the European Union as a collective force against the United States, but his threats, tariffs, and arbitrary conduct have done more than anything else in recent years to unify Europe.

Yann LeCun says that within a year to 18 months, we'll have a general method for training hierarchical world models These models would learn from video and real-world data, then help plan actions in robotics, healthcare, and other areas "then scale them toward a universal world model"

1/3 My time at Meta FAIR will soon come to a close. I joined nearly two years ago full-time to help advance LLM reasoning. It has been a remarkable journey working with and leading an exceptionally talented team.

America is eating its young. We’re a nation built on the greatness of our research universities, it’s what gave us the Manhattan Project, victory in the Cold War, over HIV/AIDS. Our future depends on a robust NextGen of scientists. But we traded it for wellness influencers, climate denialists, and phony MAHA ideologies that more resemble a twisted Lysenko version of Stalinist Russia in the 1930s and 40s

EBM are so back! @ylecun has been pointing here for years: AI reasoning needs systems that check structure before they answer. Aleph from @logic_int now leads the major formal reasoning benchmarks – let me explain what it is -> 📺

Yann LeCun says LLMs are strongest in domains where language itself is the substrate of reasoning, like math and code They can solve problems, prove theorems, and write programs — but they are not creative mathematicians, software architects, or computer scientists "their role is to help humans build"

The Art of the Steal: 1. IRS catches Trump cheating on his taxes. 2. Trump sues IRS for catching him cheating on his taxes. 3. DOJ helps Trump get $10 billion from the IRS because they caught him cheating on his taxes. 4. Americans who don't cheat on taxes will foot the bill.

There is a case to be made that the future of Mathematics is very bright. In my mind, proofs have always been a tool to achieve a goal. The goal was and still is to understand, and reading/writing proofs (or just know that they exist) will remain part of it.